Anchor position adjustment device

Abstract

An anchor position adjustment device includes a guide rail having a plurality of engagement recess portions formed to be arranged, a moving member attached to the guide rail, a lock pin-provided in the moving member, a first biasing member biasing the lock pin in an inserting direction of the lock pin with respect to the engagement recess portions, a release pin extending from the lock pin, and an operation member attached to the moving member in a slidable manner. The operation member has a release inclination surface guiding the release pin in a pulling direction of the lock pin with respect to the engagement recess portions in accordance with sliding of the operation member, and a release inhibition surface inhibiting the lock pin from being pulled out from the engagement recess portion in a pre-slide state.

The invention claimed is: 
     
       1. An anchor position adjustment device adjusting a position of an anchor supporting a seatbelt, the anchor position adjustment device comprising:
 a guide rail fixed to a vehicle body and having a plurality of engagement recess portions formed to be arranged in a first direction; 
 a moving member attached to the guide rail in a slidable manner in the first direction and having the anchor attached thereto; 
 a lock pin provided in the moving member such that the lock pin is able to move in an inserting/pulling direction with respect to the plurality of engagement recess portions; 
 a biasing member biasing the lock pin in the inserting direction of the lock pin with respect to the plurality of engagement recess portions; 
 a release pin extending in a direction intersecting with the inserting/pulling direction from the lock pin; and 
 an operation member attached to the moving member in a slidable manner, 
 wherein the operation member has:
 a release inclination surface guiding the release pin in the pulling direction of the lock pin with respect to the plurality of engagement recess portions in accordance with sliding of the operation member; 
 a release inhibition surface inhibiting the lock pin from being pulled out from the plurality of engagement recess portions in a pre-slide state before the operation member slides; and 
 a slide restriction surface restricting sliding of the operation member when the release pin abuts the slide restriction surface, and 
 wherein, in a slide direction of the operation member, when a direction in which the operation member slides from the pre-slide state and the lock pin is pulled out from the plurality of engagement recess portions is referred to as an operation direction, the release inhibition surface is positioned on a side opposite to the guide rail with respect to the release pin and extends to a position facing the release inclination surface, whereby a distance between the release inclination surface and the release inhibition surface in a direction perpendicular to the release inclination surface increases toward the operation direction, and the release inclination surface and the release inhibition surface are connected to the slide restriction surface. 
 
 
     
     
       2. An anchor position adjustment device adjusting a position of an anchor supporting a seatbelt, the anchor position adjustment device comprising:
 a guide rail fixed to a vehicle body and having a plurality of engagement recess portions formed to be arranged in a first direction; 
 a moving member attached to the guide rail in a slidable manner in the first direction and having the anchor attached thereto; 
 a lock pin provided in the moving member such that the lock pin is able to move in an inserting/pulling direction with respect to the plurality of engagement recess portions; 
 a biasing member biasing the lock pin in an inserting direction of the lock pin with respect to the plurality of engagement recess portions; 
 a release pin extending in a direction intersecting with the inserting/pulling direction from the lock pin; and 
 an operation member attached to the moving member in a slidable manner, 
 wherein the operation member has:
 a release inclination surface guiding the release pin in a pulling direction of the lock pin with respect to the plurality of engagement recess portions in accordance with sliding of the operation member; 
 a release inhibition surface inhibiting the lock pin from being pulled out from the plurality of engagement recess portions in a pre-slide state before the operation member slides; and 
 a slide restriction surface restricting sliding of the operation member when the release pin abuts the slide restriction surface, and 
 
 wherein, in a slide direction of the operation member, when a direction in which the operation member slides from the pre-slide state and the lock pin is pulled out from the plurality of engagement recess portions is referred to as an operation direction, the release inhibition surface is positioned on a side opposite to the guide rail with respect to the release pin and is formed to be an arc surface or a concave surface that is recessed in direction away from the guide rail, whereby a distance between the release inclination surface and the release inhibition surface in a direction perpendicular to the release inclination surface increases toward the operation direction, and the release inclination surface and the release inhibition surface are connected to the slide restriction surface. 
 
     
     
       3. An anchor position adjustment device adjusting a position of an anchor supporting a seatbelt, the anchor position adjustment device comprising:
 a guide rail fixed to a vehicle body and having a plurality of engagement recess portions formed to be arranged in a first direction; 
 a moving member attached to the guide rail in a slidable manner in the first direction and having the anchor attached thereto; 
 a lock pin provided in the moving member such that the lock pin is able to move in an inserting/pulling direction with respect to the plurality of engagement recess portions; 
 a biasing member biasing the lock pin in an inserting direction of the lock pin with respect to the plurality of engagement recess portions; 
 a release pin extending in a direction intersecting with the inserting/pulling direction from the lock pin; and 
 an operation member attached to the moving member in a slidable manner, 
 wherein the operation member has: 
 a release inclination surface guiding the release pin in a pulling direction of the lock pin with respect to the plurality of engagement recess portions in accordance with sliding of the operation member; 
 a release inhibition surface inhibiting the lock pin from being pulled out from the plurality of engagement recess portions in a pre-slide state before the operation member slides; and 
 a slide restriction surface restricting sliding of the operation member when the release pin abuts the slide restriction surface, and 
 wherein, in a slide direction of the operation member, when a direction in which the operation member slides from the pre-slide state and the lock pin is pulled out from the engagement recess portion is referred to as an operation direction, the release inhibition surface is positioned on a side opposite to the guide rail with respect to the release pin and is formed to be an inclination surface inclined in a direction away from the guide rail toward the operation direction, whereby a distance between the release inclination surface and the release inhibition surface in a direction perpendicular to the release inclination surface increases toward the operation direction, and the release inclination surface and the release inhibition surface are connected to the slide restriction surface.